Vent-a-matic Static Ventilator with Stormguard 159mm PBS/DGS
Supplied complete with a stormguard. Overall glass thickness 12-32mm. Hole Dim - 159mm. Continuous thru-air vent. Also known as a 'gas vent'. Achieves airflow performance 9,896mm² EA. Dim A - 5.5mm.